Selena Gomez vs. Justin Bieber: Whose Side Are You On?

This past weekend, Justin Bieber and Selena Gomez engaged in an online war of words deep within the confines of Bieber's Instagram comments. Shortly after the "Sorry" singer proclaimed he may soon make his account private, Gomez called him out, effectively telling him to suck it up or stop posting.

“If you can’t handle the hate then stop posting pictures of your girlfriend lol — it should be special between you two only. Don’t be mad at your fans. They love you. They were there for you before anyone,” she reportedly wrote, and then followed it up with her own fan-dedicated Instagram post.

But Bieber quickly fired back at his ex, possibly even accusing Gomez of using him for attention -- despite the fact that Bieber continually brings the "Hands to Myself" singer up in interviews and posts old images of the former couple to Instagram.

“It’s funny to see people that used me for attention and still try to point the finger this way. Sad. All love," he reportedly wrote.

Both parties’ remarks could qualify as petty here — neither Bieber nor Gomez opted out of commenting at all. They instead chose to fully engage, knowing full well their fans would instantly latch onto their respective comments and blow things up online. The media (hello!) naturally followed suit, and here we all are.

SO: Are you Team Bieber? Team Gomez? Team Neither? Vote in our poll below and let us know who's in the right in this very important fight.